In true Harry Hill style, fight!
Actually, rather than battle out, I was interested in peoples views. I have recently acquired both a Micro Power Rom Card and a Rombo Rom Board, but being a Amstrad CPC ROM novice I wondered whether there is a significant benefit to one over the other?
Both are actually prehistoric tech at this point.
And they do both the same as well as the https://github.com/revaldinho/cpc_ram_expansion/wiki/CPC-Eightrom-Card. You can just plugin eproms that based on the slot will identify themselfes as ROM0-7.
On the Micro Power Rom board you can also select if the should identify from 0-7 or from 8-15. But as this for all of them at the same time, it does not make a lot of sense..
Nowaydays you would use a solution, where you can have all the roms in a flash and with a very small microcontroller you would then create the protocol for selecting the correct rom.
Modern solutions are M4 or https://www.cpcwiki.eu/index.php/MegaFlash.
I must admit the Micro Power Rom board seems fiddlier to operate, particularly in respect of the DIP switches to determine which ROMs are active. The previous owner had the ROMs plugged into this, rather than the Rombo board, so I might transfer them...
I appreciate there are new/better ways to do things, but somehow I like messing with the original tech!